/*图片上传的js*/
var loadImageFile = (function() {
    if (window.FileReader) {
        var oPreviewImg = null, oFReader = new window.FileReader(), rFilter = /^(?:image\/bmp|image\/cis\-cod|image\/gif|image\/ief|image\/jpeg|image\/jpeg|image\/jpeg|image\/pipeg|image\/png|image\/svg\+xml|image\/tiff|image\/x\-cmu\-raster|image\/x\-cmx|image\/x\-icon|image\/x\-portable\-anymap|image\/x\-portable\-bitmap|image\/x\-portable\-graymap|image\/x\-portable\-pixmap|image\/x\-rgb|image\/x\-xbitmap|image\/x\-xpixmap|image\/x\-xwindowdump)$/i;

        oFReader.onload = function(oFREvent) {
            if (!oPreviewImg) {
                var newPreview = document.getElementById("imagePreview");
                oPreviewImg = new Image();
                oPreviewImg.style.width = (newPreview.offsetWidth)
                        .toString()
                    + "px";
                oPreviewImg.style.height = (newPreview.offsetHeight)
                        .toString()
                    + "px";
                if(newPreview.childNodes.length != 0){
                    newPreview.removeChild(document.getElementById("imgid"));
                }
                newPreview.appendChild(oPreviewImg);
            }
            oPreviewImg.src = oFREvent.target.result;
        };

        return function() {
            var aFiles = document.getElementById("imageInput").files;
            if (aFiles.length === 0) {
                return;
            }
            if (!rFilter.test(aFiles[0].type)) {
                alert("You must select a valid image file!");
                return;
            }
            oFReader.readAsDataURL(aFiles[0]);
        }

    }
    if (navigator.appName === "Microsoft Internet Explorer") {
        return function() {
            alert(document.getElementById("imageInput").value);
            document.getElementById("imagePreview").filters
                .item("DXImageTransform.Microsoft.AlphaImageLoader").src = document
                .getElementById("imageInput").value;

        }
    }
})();